I've used these CDs for years and I'm happy with them. They have a rich bed of sound and sonic nuances I like over most CDs, preserving a full, rich sound of my music. This is a unique quality since these are data CDs and not solely recordable 'Music' CDs. I have a favorite CD brand that's specified for 'music only' & these have come the closest to that quality in sound than any other recordable CD media I've tried. In my opinion, that's really good considering the cost. The only thing is that I've come across a couple of duds in the spindle from time to time, but the success ratio is to my satisfaction.

I have a Korg D1600mkII digital recorder with a built-in cd burner. I bought some ProMedia 52x CD-R cds to burn with. My findings were that when set to the lowest speed, 4x, bad things happen, but when set to 16x, everything worked fine. When I say "bad things happen", I mean that the resulting audio cd has some scratchy, crackly static on each of the songs, and worse, when you rip those songs to mp3, the static increases significantly. Once I changed the burn speed to 16x, the problem went away.Bottom line, when I finish using up these 50 cds, I won't buy ProMedia again.